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ETSI TS 101 376-4-5
M00001183
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ETSI TS 101 376-4-5 GEO-Mobile Radio Interface Specifications; Part 4: Radio interface protocol specifications; Sub-part 5: Data Link Layer General Aspects; GMR-1 04.005
standard by European Telecommunications Standards Institute, 04/01/2002
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Full Description
The present document introduces the link access procedures (LAP) for the satellite channel called LAPSat. The purpose of LAPSat is to carry information between the Layer 3 entities across the GeoMobile (GMR-1) network radio interface using the satellite (Sat) channel. LAPSat is the protocol used for signalling a transfer between a Mobile Earth Station (MES) and a gateway station (GS) in a GMR-1 network.Most of the procedures defined for LAPSat closely follow those defined for the LAPDm used by Global System for Mobile (GSM). References to the corresponding GSM technical specifications (GSM 04.05 [7]) are made within the present document. Only the significant differences between the LAPs for the mobile D (Dm) and Satellite (Sat) channels are described here.
The present document is based on GSM 04.05 [7].